Tim, it is really NOT that simple. The moth foiler has a control system implemented (a crude one) to help maintain its altitude, but it still needs skipper contral actions to adjust the platform foiling to different speeds and angles of sailing (the throttle on the tiller extension). This is challenging but with practice the skipper are able to control the craft.

Now if you slashed two moths together you would have 2 independently operating control systems with two throttles (one for each rudder T-foil). But best of all is that you have just increased your dynamics by a factor of two complicated by the fact that both control systems will interact with each other. This is much more challenging to design right and to handle right.

It is much better to just get the Hobie trifoiler or Rave and get flying.

Wouter